Baby eating more each feeding

Okay.. I feel kinda silly for having to ask this but I just feel so lost with this breastfeeding thing. For the past month (first month of his life) he averaged about 1.5-3 oz per feeding total and seemed totally satisfied by this. Lately he's been eating super often and never seems satisfied even if I feed him 20-25 minutes each side.. he'll still chug a bottle after. I know they can over eat with bottles but he's not doing that, he's legitimately hungry still. And I guess he could be clusterfeeding but he just went through a phase of that last week? Can he again this soon? So I guess I'm wondering will my supply adjust to say giving him 6oz total per feeding from breastfeeding? And how long does it usually take to adjust? I don't want to give him a bottle after every feeding but he's so upset if he doesn't eat more and literally sucks me dry ha. What do I do?